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The LOCHINVAR L100094965 is a manifold gasket kit designed as a direct replacement component for Crest model heating boilers. The kit provides the sealing hardware needed to maintain a gas-tight manifold assembly, preventing combustion gas leaks and ensuring proper burner operation. Manifold gaskets are wear items that degrade over time due to repeated thermal cycling, and replacing them with OEM-specified parts is the correct approach during burner manifold service or when visible leaks are detected at the manifold joint. Licensed boiler technicians and HVAC service professionals typically install this kit as part of a scheduled maintenance procedure or corrective repair.
This gasket kit is specified for use with Lochinvar Crest model FB(N/L)FB1500 through 3500 heating boilers. These are high-capacity commercial condensing boilers commonly found in large residential, light commercial, and commercial hydronic heating systems. When servicing the manifold on any unit within this model range, this kit supplies the correct gasket geometry and material to restore a proper seal at the manifold connection points.
Designed for use with Lochinvar Crest Model FB(N/L)FB1500 to 3500 heating boilers.
Installation should be performed by a licensed boiler technician or qualified HVAC professional. Shut down the boiler and allow all components to cool completely before disassembling the manifold. Follow all applicable local codes and the boiler manufacturer service documentation when replacing manifold gaskets. Inspect mating surfaces for corrosion or debris and clean thoroughly before seating the new gaskets.
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